I just purchased a biturbo exhuast pipe and absolutely love it! If anyone is considering getting one I would highly recommend it. First off they're loud, which in my mind is a plus. And second, they will give your moped about 5-7 more m.p.h., which is nice because my moped is a 1.5 hp and this upgrades it to a 2 hp
I updated my picture in my profile so check it out it if you want to see a picture of it.
Also, what does everybody else think of biturbos, or any expansion pipe that you might have??
Swarm and Destroy